L. B. C. Cordeiro, M. dos S. Oliveira, K. D. de Oliveira, M. A. de S. Barrozo, and C. N. de Ávila Neto, “Feasibility of concentrating potassium minerals from Verdete ore by cell flotation”, J. Eng. Exact Sci., vol. 7, no. 2, pp. 12338–01, May 2021.